| Top |  |  |  |  | 
gboolean e_book_utils_get_recipient_certificates_sync (ESourceRegistry *registry,const GSList *only_clients,guint32 flags,const GPtrArray *recipients,GSList **out_certificates,GCancellable *cancellable,GError **error);
Synchronously searches for recipients
 S/MIME or PGP certificates either
in provided only_clients
 EBookClient, or, when NULL, in each found
address book configured for auto-completion.
This function can be used within camel_session_get_recipient_certificates_sync()
implementation.
| registry | ||
| only_clients | optional GSList of
the EBookClient objects to search for the certificates in, or  | [element-type EBookClient][nullable] | 
| flags | bit-or of CamelRecipientCertificateFlags. | [type Camel.RecipientCertificateFlags] | 
| recipients | a GPtrArray of recipients' email addresses. | [element-type utf8] | 
| out_certificates | a GSList of gathered certificates encoded in base64. | [element-type utf8][out] | 
| cancellable | optional GCancellable object, or  | |
| error | return location for a GError, or  | 
Since: 3.30